ISO6740DWR

Overview

The ISO6740DWR is a quad-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It provides four unidirectional signal paths with a data rate of 50 Mb/s and an insulation voltage of 5000 Vrms. The device operates on a supply voltage range of 1.71 V to 5.5 V, drawing typical currents of 4.4 mA and 15 mA for the respective sides. Key electrical parameters include a propagation delay of 11 ns, rise/fall times of 4.5 ns, and pulse width distortion ranging from 0.2 ns to 0.7 ns. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides high-voltage galvanic isolation between circuits using capacitive coupling technology.
• Supports low-voltage logic interfaces with operation down to 1.71 V.
• Features robust electromagnetic compatibility and hot-swap capability.

Applications

• Industrial automation systems requiring isolated communication
• Medical equipment needing safety isolation
• Power metering applications

Procurement Notes

Verify the specific suffix (DWR) confirms the tape-and-reel packaging format and SOIC-16 body style. Ensure the order matches the unidirectional channel configuration and 50 Mbps speed rating. Confirm compliance with RoHS directives and check humidity sensitivity handling requirements during storage and assembly.

Selection Notes

Select this component when four independent unidirectional channels are required at 50 Mbps. It is suitable for designs needing 5000 Vrms isolation with low power consumption. Consider the 1.71 V minimum supply voltage for compatibility with modern low-voltage logic families compared to higher voltage alternatives.

Part Context

This part belongs to the ISO67x family of digital isolators from Texas Instruments. These devices utilize silicon dioxide (SiO2) isolation technology to provide reliable signal transmission across isolation barriers while maintaining small form factors and low power consumption suitable for dense PCB layouts.

Replacement Considerations

Check for ISO6740DR or other variants within the ISO6740 series that may differ only in reel quantity or minor mechanical tolerances. Verify pinout compatibility before substituting with other quad-channel isolators.